Me Yasa Taurari Suke Da Siffa Mai Zagaye?
Taurari a cikin tsarin hasken rana ko sararin samaniya na waje galibi ana gane su ta hanyar siffofi masu siffar siffar zagaye ko kusan siffar zagaye. Duk da haka, siffar siffar zagaye ba ta faru ba ce kwatsam. Abubuwa da ƙa'idodi da dama na zahiri a fannin ilmin taurari da kimiyyar lissafi sun bayyana dalilin da yasa duniyoyi ke da irin waɗannan siffofi. Wannan labarin zai tattauna manyan abubuwan da ke haifar da siffofi masu siffar zagaye na duniyoyi, gami da nauyi, daidaiton hydrostatic, da sauran abubuwan da ke ba da gudummawa ga waɗannan hanyoyin.
1. Tasirin Nauyi
Babban abin da ke sa duniya ta zagaya shi ne nauyi. Nauyi shine ƙarfin jan hankali tsakanin nauyin duniya da duk wani abu da ke cikinta. Ƙarfin nauyi na duniya yana aiki zuwa ga tsakiyar taro, yana jan dukkan abu zuwa tsakiya. Wannan yana sa abu a saman duniya ya rarraba daidai a kowane bangare, wanda ke haifar da siffa mai ƙarancin kuzari: ƙwallo. Nauyi yana taka rawa wajen daidaita ƙarfin don komai ya jawo hankali zuwa ga tsakiyar nauyi, wanda ke haifar da duniya ko tauraro da ke fuskantar siffar ƙwallo.
2. Daidaiton Hydrostatic
Duniya mai girman da za ta iya sarrafa siffarta za ta kai ga daidaiton hydrostatic, ma'ana cewa ƙarfin nauyi da ke jan abu zuwa ciki yana daidaita ta hanyar matsin lamba na ciki na duniyar da ke turawa waje. A cikin wannan yanayin daidaiton hydrostatic, ana rage kuzari, yana kiyaye duniyar mai siffar zagaye. A wata ma'anar, yanayi ne da ƙarfin ciki da na waje na abu ke cikin daidaito, wanda ke hana gagarumin canjin siffarsa.
3. Bambancin Taurari
Abu na uku da ke taimakawa wajen samar da siffar zagaye ta duniya shine cikakken bambancin duniya. Wannan bambance-bambancen yana faruwa ne lokacin da duniya ta sami yadudduka na kayan da ke cikinta na nau'ikan yawa daban-daban saboda nauyi. Kayan da ke da yawa suna motsawa zuwa tsakiyar duniyar, yayin da kayan da ba su da yawa suna iya sauka zuwa saman. Wannan tsari yana haifar da wani yanayi na musamman na matsin lamba wanda a ƙarshe ke tallafawa siffar zagaye gaba ɗaya.
4. Tasirin Juyawa
Duk da cewa nauyi shine babban dalilin siffar duniyoyi masu siffar zagaye, juyawar duniyoyi kuma tana taka muhimmiyar rawa. Yawancin duniyoyi ba cikakkun duniyoyi ba ne amma suna fuskantar ɗan kumburi a kusa da equator ɗinsu saboda tasirin juyawarsu. Juyawar duniyoyi yana haifar da ƙarfin centrifugal wanda ke tura abu a equator waje. Sakamakon haka, duniyoyi suna ɗan faɗi a sandunan kuma suna ƙara kumbura a equator, suna samar da ellipsoid mai siffar oblate. Misali na gargajiya shine duniyar Duniya, wacce ke da siffar geoid - ba cikakkiyar kumbura ba amma ɗan elliptical saboda juyawarta.
5. Samar da Taurari
Samuwar duniyoyi daga farkon nebulae da ke juyawa da sauri shi ma yana tasiri sosai ga siffar su ta siffar zagaye. A farkon matakan samuwar duniyoyi, abubuwan da ke taruwa suna samar da faifai mai juyawa. Daga baya, ta hanyar tara nauyi da haɗuwa, duniyoyin suna ɗaukar siffar siffar zagaye. Yayin da duniyar ke samun isasshen nauyi, nauyi ya fara mamaye, yana rarraba taro daidai gwargwado a kowane bangare, wanda ke haifar da siffar siffar zagaye.
6. Tasirin Karo
A farkon tarihin tsarin hasken rana, karo na sararin samaniya yakan kasance mai tsanani kuma akai-akai. Waɗannan karo na iya ƙara nauyi a hankali ga duniyoyi, yana ƙara jan hankalin nauyi. Bugu da ƙari, manyan tasirin na iya narke saman duniyar gaba ɗaya ko kaɗan, yana barin kayan su gudana su koma siffar ƙwallo.
7. Shaida daga Lura
Za mu iya lura da siffar duniyoyi masu siffar ...
8. Taurari waɗanda ba su da cikakken zagaye
Duk da cewa duniyoyi suna da siffar zagaye, ba sa taɓa zama siffar zagaye cikakke. Wannan ya faru ne saboda bambancin yanki a cikin yawan jama'a, rarrabawar taro mara daidaito, ayyukan ƙasa, da ƙarfin da juyawar duniyar ke haifarwa. Duk da haka, waɗannan kurakuran gabaɗaya ƙanana ne idan aka kwatanta da sikelin gabaɗaya.
Kammalawa
Siffar siffar duniya mai siffar siffar duniya sakamakon ƙarfin nauyi ne da ke aiki zuwa tsakiyar abin, wanda matsin lamba na ciki da ke cikin duniyar ke haifarwa ya daidaita. Ƙarin abubuwa, kamar juyawa, bambancin filin nauyi, da tasirin karo, suma suna taka muhimmiyar rawa wajen tsara wannan siffar siffar siffar duniya. Siffar siffar duniyar tana nuna daidaito mai laushi tsakanin ƙarfin ciki da na waje, kuma tana nuna ɗaya daga cikin muhimman abubuwan da suka shafi dokokin kimiyyar lissafi waɗanda suka shafi duniyarmu.
Saboda haka, fahimtar dalilin da yasa duniyoyi suke zagaye ba wai kawai yana ba mu zurfin fahimta game da duniyoyin kansu ba, har ma da manyan dokoki da ƙa'idodi da ke tafiyar da sararin samaniyarmu.
